Blown Fusible Link

[0DegreeEngineer]

This morning when driving to work I had turned onto a rural highway and accelerated made it about 500 yards and lost all power. I was able to test and confirm the fusible link had done its job and separated internally. After looking over the wiring schematic I see a circuit breaker on the rear of the gauge cluster near the Ammeter, the ammeter leads are going to two different splices in the harness is there an area I am missing, miss reading or I something else I should be looking at? I would like to take it to a show at the end of the month but I don't want to just slap the fusible link in and hope it will fix itself. Any suggestions would be greatly appreciated. Highlighted in yellow is the Fusible Link circuit.

 

[0DegreeEngineer]

Sorry 1969 Plymouth GTX 440 With 727 Aftermarket Electronic Ignition 1970 Style Day 2 ignition System

 

[pnora]

There is a circuit breaker by the ammeter on convertibles and station wagons. You have a dead short to ground. I would look close at the alternator and the wires running along the valve cover.

 

[gkent]

There is a circuit breaker by the ammeter on convertibles and station wagons.

Yup. No circuit breaker on any other models.

 

[0DegreeEngineer]

Ok I could have a short in the engine compartment or instrument panel as well to blow the fusible link? Ok I will trace wiring on engine side check and make sure that is ok then move to dashboard, sounds good I will give that a try after work. Thanks @pnora

Ok great ignore circuit breaker on schematic. Thanks @gkent

 

[0DegreeEngineer]

Well I found the culprit it was pure laziness... I found when I had added the light

harness on Saturday I had positioned the charging wire on the alternator incorrectly and it rubbed through the sheathing and caused a short, repositioned the wires at the 12 o'clock position and now no issues other than ordering a new fusible link, is there anywhere other than classicindustries.com and yearone.com where I can get a replacement I am good on parts for now but the shipping is ridiculous..

 

[Tinker67]

Well I found the culprit it was pure laziness... I found when I had added the light View attachment 1851920View attachment 1851921View attachment 1851922View attachment 1851923harness on Saturday I had positioned the charging wire on the alternator incorrectly and it rubbed through the sheathing and caused a short, repositioned the wires at the 12 o'clock position and now no issues other than ordering a new fusible link, is there anywhere other than classicindustries.com and yearone.com where I can get a replacement I am good on parts for now but the shipping is ridiculous..

Got mine from NAPA about 3 yrs. ago. Had a good selection at that time. No telling now.

 

[pnora]

Well I found the culprit it was pure laziness... I found when I had added the light View attachment 1851920View attachment 1851921View attachment 1851922View attachment 1851923harness on Saturday I had positioned the charging wire on the alternator incorrectly and it rubbed through the sheathing and caused a short, repositioned the wires at the 12 o'clock position and now no issues other than ordering a new fusible link, is there anywhere other than classicindustries.com and yearone.com where I can get a replacement I am good on parts for now but the shipping is ridiculous..

Thats one reason why I do not add additional items to be powered off the alternator stud.

 

[Don Frelier]

I would still suggest some heat shrink or Dip-it on there.

Rock-Auto sells fusible links under tools and universal parts>electrical>Fuse>Fusible Link

 

[0DegreeEngineer]

Got mine from NAPA about 3 yrs. ago. Had a good selection at that time. No telling now.

Looked at Napa their selection for fusible links is non existent.

Thats one reason why I do not add additional items to be powered off the alternator stud.

Fair enough I was just fighting low alternator charge on the one wire system but i see the issue now for sure.

I would still suggest some heat shrink or Dip-it on there.

Rock-Auto sells fusible links under tools and universal parts>electrical>Fuse>Fusible Link

I will probably add that before i add in the replacement fusible link, have you made your own with wire before is that recommended i hear not all 16 gauge fusible links are not the same, is that true?